🚀 go-pugleaf

Hi folks,

Just a quick note to let people know that the ftp site here has added
several of the modules from the SGI Explorer CD distributed at SIGGRAPH '92.

Jeff has had these in a different format for some time in /explorer/unsupported
(the entire content of the CD) at swedishchef.lerc.nasa.gov.

The new modules are available in SGI binary form only, and are :
	Ball 
	Triangulate3D 
	GnuPlot
	Mixer
	ArenaInfo
	particles

and are stored on ftp.epcc.ed.ac.uk, under the
[/pub]/explorer/modules/<module_name> directory in compressed tar files.

+ the amended .mres file for Render which makes the snap button visible is in 
[/pub]/explorer/modules/RenderSnap.

+ some new maps are available in [/pub]/explorer/maps

Hope this is useful,
	-Gordon

===========
Ball
====
This module generates colored spheres from an input curvilinear lattice
at each point in the data. The colour and radius of the sphere can
reflect the attribute(s) of the data.

Triangulate3D
=============
What this  program  does  is  to  incrementally  create  the Delaunay
graph  of a given set of sites. The Delaunay graph consists of all
tetrahedrons of the Delaunay  diagram,  with two  tetrahedrons  being
linked  together  iff they share a common triangle. In this
implementation we use  the  concept of  "infinite  tetrahedrons",
being  the "convex hull" of a triangle on the convex hull of the sites
together  with  the point at infinity. This is because

The incremental algorithm used here is derived from a convex hull
algorithm due to Raimund Seidel. It takes O(n) time to insert a site
into a diagram of n sites, which leads  to  an O(n^2)  algorithm  for
a  diagram  of  n  sites.  The space required for a diagram of n sites
is O(n^2), too.

This module was implemented using code generated by:

Dr  Thomas  Roos  Univ  Wuerzburg  Am  Hubland   D-8700 Wuerzburg,
Germany

GnuPlot
=======
This is an implementation of gnuplot 3.0. The  additions  to standard
gnuplot are :

The plot/splot commands have an additional field to  specify how  to
extract  information  from  the  input lattice. The special filenames
Data and Coord refer to the  data  portion and the coordinate portion
of the lattice. For example.

plot "Data" splot "Coord" with lines

Mixer
=====
This module allows the user to mix the coordinates and  data of  a
lattice.  The output is a 1D curvilinear lattice with the coordinates
as specified by the user. Either the data or coordinates  are  copied
completely into the data portion of the lattice.

ArenaInfo
=========
ArenaInfo prints an analysis of the shared memory arena used to
communicate between IRIS Explorer modules.  The analysis consists of
the following:

- A summary of the shared memory size and utilization

-  An  optional  display  of  the  shared  memory  heap
information (usmallinfo(3C) heap data structures)

- An analysis of whether or not the shared memory arena
has  enough  disk  space  available to grow to its full
size.  A warning is printed if there is not enough disk
space.

particles
========
This module creates a point at each grid location in  an  n-
dimensional  grid.   The  point  may be depicted as a single
pixel, tetrahedron or sphere.

RenderSnap
----------
This is an amended version of Render, with the Snap button
made visible.

Copy the .mres file to your target dirctory, and symbolically 
link the existing Render to the be the new RenderSnap.

-- 
e|p Gordon Cameron                      |     Phone:+44 31 650 5024(Rm. 2259)
c|c Edinburgh Parallel Computing Centre |     Email: gordonc@epcc.ed.ac.uk
    oOo The University of Edinburgh oOo |    'So far so good, so now so what'